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| | It is generally not necessary to prepare the picked up molecule down until only one atom is left. | | It is generally not necessary to prepare the picked up molecule down until only one atom is left. |
| | That is in most cases one does not put down single atoms but small moieties (always bond molecules). Most often unused bonds are left hydrogen capped and and only one or two bonds are actively used - the one to the tooltip and the one to the workpiece. Hydrogen and oxygen with one and two bonds respectively are subject for single atomic deposition. The heavier elements of the same groups - the halogenes calcogenes - too. | | That is in most cases one does not put down single atoms but small moieties (always bond molecules). Most often unused bonds are left hydrogen capped and and only one or two bonds are actively used - the one to the tooltip and the one to the workpiece. Hydrogen and oxygen with one and two bonds respectively are subject for single atomic deposition. The heavier elements of the same groups - the halogenes calcogenes - too. |
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| − | == simple respurce molecules ==
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| − | For [[mechanosynthesis]] of diamond '''ethyne C<sub>2</sub>H<sub>2</sub> methane CH<sub>4</sub>''' and traces of digermane '''Ge<sub>2</sub>H<sub>6</sub>''' can be used. This has been toroughly analyzed.
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| − | Further molecules of prime interest are '''[[Mechanosynthetic carbon dioxide splitting|carbon dioxide CO<sub>2</sub>]] [[Mechanosynthetic water splitting|water H<sub>2</sub>O]] and nitrogen gas N<sub>2</sub>'''.
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| − | The capability of handling those allows for tapping the [[air as a resource]] for products that (almost) exclusively contain [[diamondoid molecular elements]] out of hydrogen carbon oxygen and nitrogen (HCON).
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| − | From the metals Aluminum and Titanium would be of interest.
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| − | Resource molecules for other elements should preferentially be non or at least low toxic and easy to handle.
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| − | * for boron: B<sub>2</sub>H<sub>6</sub> [http://en.wikipedia.org/wiki/Diborane diborane] is toxic and reacts with water to <br> B(OH)<sub>3</sub> [http://en.wikipedia.org/wiki/Boric_acid#Toxicology boric acid] which is pretty harmless and thus a better resource
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| − | * for fluorine: SF<sub>6</sub> [http://en.wikipedia.org/wiki/Sulfur_hexafluoride sulfur hexafluoride] very heavy pretty inert gas, soluble in ethanol <br> the sulfur can be used ore disposed as diluted sulfuric acid
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| − | * for aluminum: ?
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| − | * for silicon: [http://en.wikipedia.org/wiki/Silicic_acid silicic acid] self polymerizes and is thus not suitable <br> SiH<sub>4</sub> [http://en.wikipedia.org/wiki/Silane] seems better but it's quite toxic, higher silans tend to be explosive
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| − | * for phosphorus: PH<sub>3</sub> [http://en.wikipedia.org/wiki/Phosphine phosphine] seems too toxic <br> H<sub>3</sub>O<sub>4</sub>P [http://en.wikipedia.org/wiki/Phosphoric_acid phosphoric acid] seems good
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| − | * for chlorine: dissolved table salt NaCl - or diluted hydrochloric acid
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| − | = Sources for sulfur =
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| − | Good information resource for sulfur compounds: [http://en.wikipedia.org/wiki/Category:Sulfur_compounds wikipedia]
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| − | == of main interest ==
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| − | * ammonium sulfate (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> ([http://en.wikipedia.org/wiki/Ammonium_sulfate wikipedia]) - pro: waste nitrogen can go to atmosphere, massively available - con: explosive in dry form
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| − | * methylsulfonylmethane C<sub>2</sub>H<sub>6</sub>O<sub>2</sub>S- ([http://en.wikipedia.org/wiki/Methylsulfonylmethane wikipedia]) - pro: non toxic - con: carries carbon too
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| − | * sulfuric acid H<sub>2</sub>SO<sub>4</sub> ([http://en.wikipedia.org/wiki/Sulfuric_acid wikipedia]) - pro: massively available - con: acidity
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| − | == maybe interesting ==
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| − | * diallyl trisulfide C6H10S3 ([http://en.wikipedia.org/wiki/Diallyl_trisulfide wikipedia]) - main component of garlic oil - con: carries lots of carbon and hydrogen
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| − | * syn-Propanethial-S-oxide C3H6OS ([http://en.wikipedia.org/wiki/Syn-Propanethial-S-oxide wikipedia]) - irritant expelled by cut onions
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| − | * dimethyl trisulfide C2H6S3 ([http://en.wikipedia.org/wiki/Dimethyl_trisulfide wikipedia])
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| − | * carbon disulfide CS<sub>2</sub> [http://en.wikipedia.org/wiki/Carbon_disulfide (wikipedia)] - soluble in ethanol - pro: massively available - con: toxic
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| − | * carbonyl sulfide ([http://en.wikipedia.org/wiki/Carbonyl_sulfide wikipedia]) - con: toxic, carries less sulfur than carbon disulfide
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| − | * hydrogen sulfide H2S, sulfur dioxide SO2, sulfur trioxide SO3 - all too dangerous and toxic
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| − | * thioacetic acid C2H4OS ([http://en.wikipedia.org/wiki/Thioacetic_acid wikipedia])
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| − | * methanesulfonic acid CH3SO3H ([http://en.wikipedia.org/wiki/Methanesulfonic_acid wikipedia]), ([http://en.wikipedia.org/wiki/Mesylate wikipedia])
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| | [[Category:Technology level III]] | | [[Category:Technology level III]] |
| | [[Category:Technology level II]] | | [[Category:Technology level II]] |
| | [[Category:Mechanosynthesis]] | | [[Category:Mechanosynthesis]] |
